Unicel 24" Partial DE Filter Grid for 48 sq. ft. Systems | PG-1904
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- SKU:
- PG-1904
-
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About This Item
Precision-engineered as an exact-fit replacement, the Unicel PG-1904 is the partial DE filter grid designed for use in 48 sq. ft. DE filter systems across Hayward, Pentair, Jandy, Astral, Waterway, and other leading filter brands. Built to exacting dimensional tolerances with reinforced construction, it delivers reliable filtration performance and a snug manifold fit — restoring your filter's full capacity and pressure resistance.
⚠️ IMPORTANT: PARTIAL GRID — NOT A FULL GRID
This is a single partial DE filter grid, used alongside full grids to complete a filter set. Verify your filter model's grid configuration before ordering — partial grids are NOT interchangeable with full grids.
⚠️ IMPORTANT: Full Grids Also Required — This is the Partial Grid Only
Most compatible 48 sq. ft. DE filter systems require 7 full grids + 1 partial grid (this item) for a complete re-grid service. You will also need the companion full grid — Unicel FG-1004 Replacement DE Filter Grid.
Prefer to buy everything at once? The Unicel FS-2004 Complete DE Filter Grid Set includes all 7 full grids + this partial grid in one order.
Specifications
| Filter System Area | 48 sq. ft. (total system capacity) |
| Grid Length | 24" (measured end-to-end; collar not included) |
| Grid Type | Partial Grid (used with 7 full grids for complete system) |
| Collar Configuration | Open slot with 2 notches |
| Material | High-grade DE filter fabric with reinforced seaming |
Note from Unicel: Collar has open slot (2 notches). Length is measured from one end of the grid to the other; collar is not included.
Fits Into:
| OEM Brand | Filter Model | Replaces Part # | Grid Configuration |
| Hayward | Micro-Clear 48, Pro-Grid 48 | DEX4800DS | 7 full (FG-1004) + 1 partial (PG-1904) |
| Pentair – American Products | 5000 Series, Titan CM, Titan RPM, Titan Stainless Steel | 59002300 | 7 full (FG-1004) + 1 partial (PG-1904) |
| Pentair – Pac Fab | FNS 48 (Nautilus FNS Polymeric), NS48 (Nautilus), NSP-48 (Nautilus Plus) | 19-2332 | 7 full (FG-1004) + 1 partial (PG-1904) |
| Pentair – Pac Fab | FNS Plus 48 | 59002300 | 7 full (FG-1004) + 1 partial (PG-1904) |
| Jandy (Waterpik) | DEL/DEV 48 | A0560100 | 7 full (FG-1004) + 1 partial (PG-1904) |
| Astral | 18046 Clarity DE | — | 7 full (FG-1004) + 1 partial (PG-1904) |
| Waterway Plastics | Crystal Water | 818-3900 | 7 full (FG-1004) + 1 partial (PG-1904) |
(This is not an exhaustive list.)
Pro Tip: Always turn off the pump and release all pressure from the filter tank via the air relief valve before opening the tank to replace grids. Verify your filter model's grid count and configuration — most 48 sq. ft. systems use 7 full grids + 1 partial — and inspect the manifold o-ring and collar alignment before reassembly.
Also known as: PG1904
